（τροχός). A hoop for children. It was made of iron or
bronze, and rolled by a sort of crooked stick or “key” (clavis). Sometimes, as with us, it had small bells fastened to it to jingle as the
hoop rolled (Mart.xiv. 169).
Harry Thurston Peck. Harpers Dictionary of Classical Antiquities. New York. Harper and Brothers. 1898.
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